Churchill's Real "Never Give Up" Speech

There is a widespread myth about a famous short speech supposedly delivered by Winston Churchill. Most versions go something like the one I found in a Christian book:

There's this famous story about Sir Winston Churchill, who near the end of his distinguished career was asked to return and speak at his old school, Harrow (where as a boy he'd almost flunked out)…

The great day finally arrived, and after the school's fanfare and acclamation Sir Winston stood to his feet, acknowledged the introduction, and gave the following address, which is quoted in full: 'Young men, never give up. Never give up! Never give up!! Never, never, never-never-never-never!'"

According to Bartlett's Familiar Quotations, the speech was not delivered near the end of Churchill's career (he died in 1965), but on October 29, 1941. And he wasn't Sir Winston till 1953. And what he really said was, "Never give in, never give in, never, never, never, never—in nothing, ...